Warning: Undefined variable $update_ocena in /home/adiknew/domains/mksiegarnia.pl/public_html/ksiazka.php on line 62
Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '), `ilosc_ocen` = CONCAT(ilosc_ocen+1) WHERE `isbn` = '9780753722718'' at line 1 in /home/adiknew/domains/mksiegarnia.pl/public_html/ksiazka.php:62
Stack trace:
#0 /home/adiknew/domains/mksiegarnia.pl/public_html/ksiazka.php(62): mysqli_query()
#1 {main}
thrown in /home/adiknew/domains/mksiegarnia.pl/public_html/ksiazka.php on line 62